12688996650 has 48 divisors (see below), whose sum is σ = 34329508128. Its totient is φ = 3076120000.

The previous prime is 12688996637. The next prime is 12688996667. The reversal of 12688996650 is 5669988621.

12688996650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12688996650² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3843501 + ... + 3846800.

It is an arithmetic number, because the mean of its divisors is an integer number (715198086).

Almost surely, 2^12688996650 is an apocalyptic number.

12688996650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12688996650 is an abundant number, since it is smaller than the sum of its proper divisors (21640511478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12688996650 is a wasteful number, since it uses less digits than its factorization.

12688996650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7690327 (or 7690322 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 60.

The spelling of 12688996650 in words is "twelve billion, six hundred eighty-eight million, nine hundred ninety-six thousand, six hundred fifty".